Move variables runtime config to a new crate

Signed-off-by: Ryan Levick <ryan.levick@fermyon.com>

crates/factor-variables/Cargo.toml

@@ -5,18 +5,12 @@ authors = { workspace = true }
 edition = { workspace = true }
 
 [dependencies]
-azure_core = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
-azure_identity = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
-azure_security_keyvault = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
-dotenvy = "0.15"
 serde = { workspace = true }
 spin-expressions = { path = "../expressions" }
 spin-factors = { path = "../factors" }
 spin-world = { path = "../world" }
-tokio = { workspace = true, features = ["rt-multi-thread"] }
 toml = { workspace = true }
 tracing = { workspace = true }
-vaultrs = "0.7"
 
 [dev-dependencies]
 spin-factors-test = { path = "../factors-test" }

crates/factor-variables/src/lib.rs

@@ -1,6 +1,5 @@
 mod host;
 pub mod runtime_config;
-pub mod spin_cli;
 
 use std::sync::Arc;
 

crates/factor-variables/tests/factor_test.rs

@@ -1,7 +1,6 @@
-use spin_factor_variables::{spin_cli, VariablesFactor};
-use spin_factors::{
-    anyhow, Factor, FactorRuntimeConfigSource, RuntimeConfigSourceFinalizer, RuntimeFactors,
-};
+use spin_expressions::{Key, Provider};
+use spin_factor_variables::{runtime_config::RuntimeConfig, VariablesFactor};
+use spin_factors::{anyhow, RuntimeFactors};
 use spin_factors_test::{toml, TestEnvironment};
 use spin_world::v2::variables::Host;
 
@@ -11,10 +10,14 @@ struct TestFactors {
 }
 
 #[tokio::test(flavor = "multi_thread")]
-async fn static_provider_works() -> anyhow::Result<()> {
+async fn provider_works() -> anyhow::Result<()> {
     let factors = TestFactors {
         variables: VariablesFactor::default(),
     };
+    let providers = vec![Box::new(MockProvider) as _];
+    let runtime_config = TestFactorsRuntimeConfig {
+        variables: Some(RuntimeConfig { providers }),
+    };
     let env = TestEnvironment::new(factors)
         .extend_manifest(toml! {
             [variables]
@@ -24,46 +27,23 @@ async fn static_provider_works() -> anyhow::Result<()> {
             source = "does-not-exist.wasm"
             variables = { baz = "<{{ foo }}>" }
         })
-        .runtime_config(TomlConfig::new(toml! {
-            [[variables_provider]]
-            type = "static"
-            values = { foo = "bar" }
-        }))?;
+        .runtime_config(runtime_config)?;
 
     let mut state = env.build_instance_state().await?;
     let val = state.variables.get("baz".into()).await?;
     assert_eq!(val, "<bar>");
     Ok(())
 }
 
-struct TomlConfig {
-    table: toml::Table,
-}
-
-impl TomlConfig {
-    fn new(table: toml::Table) -> Self {
-        Self { table }
-    }
-}
-
-impl TryFrom<TomlConfig> for TestFactorsRuntimeConfig {
-    type Error = anyhow::Error;
-
-    fn try_from(value: TomlConfig) -> Result<Self, Self::Error> {
-        Self::from_source(value)
-    }
-}
-
-impl FactorRuntimeConfigSource<VariablesFactor> for TomlConfig {
-    fn get_runtime_config(
-        &mut self,
-    ) -> anyhow::Result<Option<<VariablesFactor as Factor>::RuntimeConfig>> {
-        spin_cli::runtime_config_from_toml(&self.table).map(Some)
-    }
-}
+#[derive(Debug)]
+struct MockProvider;
 
-impl RuntimeConfigSourceFinalizer for TomlConfig {
-    fn finalize(&mut self) -> anyhow::Result<()> {
-        Ok(())
+#[spin_world::async_trait]
+impl Provider for MockProvider {
+    async fn get(&self, key: &Key) -> anyhow::Result<Option<String>> {
+        match key.as_str() {
+            "foo" => Ok(Some("bar".to_string())),
+            _ => Ok(None),
+        }
     }
 }

crates/runtime-config/Cargo.toml

@@ -28,6 +28,7 @@ spin-key-value-redis = { path = "../key-value-redis" }
 spin-key-value-spin = { path = "../key-value-spin" }
 spin-sqlite = { path = "../sqlite" }
 spin-trigger = { path = "../trigger" }
+spin-variables = { path = "../variables" }
 toml = { workspace = true }
 
 [dev-dependencies]

crates/runtime-config/src/lib.rs

@@ -13,7 +13,7 @@ use spin_factor_outbound_networking::OutboundNetworkingFactor;
 use spin_factor_outbound_pg::OutboundPgFactor;
 use spin_factor_outbound_redis::OutboundRedisFactor;
 use spin_factor_sqlite::SqliteFactor;
-use spin_factor_variables::{spin_cli as variables, VariablesFactor};
+use spin_factor_variables::VariablesFactor;
 use spin_factor_wasi::WasiFactor;
 use spin_factors::runtime_config::toml::GetTomlValue as _;
 use spin_factors::{
@@ -314,7 +314,9 @@ impl FactorRuntimeConfigSource<VariablesFactor> for TomlRuntimeConfigSource<'_,
     fn get_runtime_config(
         &mut self,
     ) -> anyhow::Result<Option<<VariablesFactor as spin_factors::Factor>::RuntimeConfig>> {
-        Ok(Some(variables::runtime_config_from_toml(&self.toml.table)?))
+        Ok(Some(spin_variables::runtime_config_from_toml(
+            &self.toml.table,
+        )?))
     }
 }
 

crates/variables/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "spin-variables"
+version.workspace = true
+authors.workspace = true
+edition.workspace = true
+license.workspace = true
+homepage.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+azure_core = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
+azure_identity = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
+azure_security_keyvault = { git = "https://github.com/azure/azure-sdk-for-rust", rev = "8c4caa251c3903d5eae848b41bb1d02a4d65231c" }
+dotenvy = "0.15"
+serde = { workspace = true }
+spin-expressions = { path = "../expressions" }
+spin-factors = { path = "../factors" }
+spin-factor-variables = { path = "../factor-variables" }
+spin-world = { path = "../world" }
+tokio = { workspace = true, features = ["rt-multi-thread"] }
+tracing = { workspace = true }
+vaultrs = "0.7"
+
+[lints]
+workspace = true

crates/factor-variables/src/spin_cli/mod.rs → crates/variables/src/lib.rs

@@ -14,7 +14,7 @@ use serde::Deserialize;
 use spin_expressions::Provider;
 use spin_factors::{anyhow, runtime_config::toml::GetTomlValue};
 
-use crate::runtime_config::RuntimeConfig;
+use spin_factor_variables::runtime_config::RuntimeConfig;
 
 /// Resolves a runtime configuration for the variables factor from a TOML table.
 pub fn runtime_config_from_toml(table: &impl GetTomlValue) -> anyhow::Result<RuntimeConfig> {